"Glee" may be gold on FOX, but its stars were woefully underused on "The Simpsons."The animated show kicked off it's 22nd season Sunday night (Sept. 26), and much of the advertising was sure to mention that sister FOX show "Glee" would have a few of its stars -- Lea Michele, Cory Monteith and Amber Riley -- stopping by. Hoping for some biting musical jabs or references to Sue Sylvester or, hell, even the overuse of hair gel, we tuned in to see what "Glee" shenanigans were afoot. We were underwhelmed. In "The Simpsons" B plot, Lisa is sent to Arts Camp for a week and meet three fellow campers -- the animated versions of Rachel, Finn and Mercedes. They roughly look like their flesh counterparts and even sing a spoof of "Good Vibrations" titled "Arts Education," but that's really about it. Very few quippy lines, and the few they had fell flat. Shoot, they don't ever officially introduce themselves either. Frankly, we were disappointed. These kids might as well have been anybody. For an episode titled "Elementary School Musical," we definitely expected an extravaganza along the lines of "Camp Rock 2," but more irreverent of course. We wonder: Perhaps some good stuff was cut out? The episode wasn't a total loss though. In the guest stars department, "Flight of the Conchords'" Jemaine Clement and Bret McKenzie lend their voices to super-artsy camp counselors that are struggling artists in their daily lives. Also, public radio personality Ira Glass spoofing himself on a hot dog-themed "This American Life" segment is hilarious ("Act I: Ketchup, "Act II ..."), and Stephen Hawking is always a welcome. Another great highlight is Bart's opening sequence chalkboard message: "When I slept in class it was not to help Leo DiCaprio." "Inception" love!